Record envelope, standing records and threshold days for Atoka Dam (USC00340394), Oklahoma, United States, with 37 years of record.
Key Facts for Atoka Dam
Atoka Dam (USC00340394) is a weather station in Oklahoma, United States at 34.45 latitude and -96.07 longitude, 181 m (595 ft) above sea level.
The station reports from 1963 to 1999, 37 years of record.
1,464 records set at Atoka Dam still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Atoka Dam set a daily record precipitation of 44.2 mm (1.7 in) on 13 December 1999.
About the Station
Location: Oklahoma, United States, 34.45 latitude, -96.07 longitude.
Elevation: 181 m (595 ft).
Period of record: 1963 to 1999, 37 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Atoka Dam. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Atoka Dam, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
26.1 C (79.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Feb
32.8 C (91.0 F)
-16.7 C (1.9 F)
n/a
n/a
Mar
32.8 C (91.0 F)
-10.0 C (14.0 F)
n/a
n/a
Apr
35.0 C (95.0 F)
-6.1 C (21.0 F)
n/a
n/a
May
35.0 C (95.0 F)
2.8 C (37.0 F)
n/a
n/a
Jun
40.0 C (104.0 F)
7.2 C (45.0 F)
n/a
n/a
Jul
43.3 C (109.9 F)
10.0 C (50.0 F)
n/a
n/a
Aug
43.3 C (109.9 F)
11.7 C (53.1 F)
n/a
n/a
Sep
44.4 C (111.9 F)
4.4 C (39.9 F)
n/a
n/a
Oct
37.2 C (99.0 F)
-2.8 C (27.0 F)
n/a
n/a
Nov
30.6 C (87.1 F)
-11.7 C (10.9 F)
n/a
n/a
Dec
26.7 C (80.1 F)
-17.2 C (1.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Atoka Dam still stand. 1963 holds the most, with 84.
Standing records at Atoka Dam by the year they were set
Year set
Standing records
1963
84
1964
52
1965
48
1966
55
1967
54
1968
38
1969
43
1970
59
1971
32
1972
49
1973
23
1974
38
1975
29
1976
46
1977
26
1978
40
1979
27
1980
37
1981
22
1982
23
1983
49
1984
43
1985
36
1986
50
1987
37
1988
21
1989
71
1990
52
1991
38
1992
20
1993
23
1994
18
1995
33
1996
39
1997
26
1998
56
1999
27
Wettest Day of Each Month
Sep: 167.6 mm (6.6 in)
The wettest day on record for each calendar month at Atoka Dam. The most was 167.6 mm (6.6 in) on 5 September 1986.
Record daily precipitation for each month at Atoka Dam
Month
Record daily precipitation (mm)
Date
Jan
73.2 mm (2.9 in)
17 January 1990
Feb
111.8 mm (4.4 in)
9 February 1966
Mar
70.9 mm (2.8 in)
20 March 1979
Apr
99.1 mm (3.9 in)
20 April 1976
May
72.4 mm (2.9 in)
28 May 1987
Jun
102.1 mm (4.0 in)
12 June 1970
Jul
75.4 mm (3.0 in)
7 July 1982
Aug
86.4 mm (3.4 in)
27 August 1964
Sep
167.6 mm (6.6 in)
5 September 1986
Oct
119.1 mm (4.7 in)
22 October 1984
Nov
66.0 mm (2.6 in)
29 November 1982
Dec
76.5 mm (3.0 in)
21 December 1987
Period of Record Coverage
1963 to 1999
Complete yearUnder 90 percent of days
37 years of record at Atoka Dam, 1963 to 1999. 19 years have data for under 90 percent of days and are left out of rankings: 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 14 complete years at Atoka Dam, 1963 to 1990. Blue stripes are years cooler than the station's own mean of 16.5 C (61.8 F); red stripes are warmer. The coolest year was 1968, at 15.5 C (59.9 F), and the warmest was 1990, at 17.6 C (63.8 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Atoka Dam as warming stripes, 1963 to 1990
Year
Annual mean temperature
Difference from the station mean
1963
17.4 C
+0.80 C
1964
16.7 C
+0.19 C
1965
17.1 C
+0.54 C
1966
16.0 C
-0.53 C
1967
16.3 C
-0.28 C
1968
15.5 C
-1.07 C
1969
16.3 C
-0.28 C
1970
16.1 C
-0.49 C
1971
16.2 C
-0.32 C
1972
16.3 C
-0.27 C
1986
17.6 C
+1.00 C
1988
16.6 C
+0.08 C
1989
16.1 C
-0.47 C
1990
17.6 C
+1.09 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1963 to 1999
Yearly extremes at Atoka Dam: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
44.4 C (111.9 F)
1985
39.4 C (102.9 F)
37
Coldest night (TNn)
-20.6 C (-5.1 F)
1977
-13.3 C (8.1 F)
37
Wettest day (Rx1day)
167.6 mm (6.6 in)
1986
78.7 mm (3.1 in)
37
Wettest five days (Rx5day)
212.5 mm (8.4 in)
1986
106.0 mm (4.2 in)
37
Longest dry spell (CDD)
54 days
1963
26 days
37
Hottest day (TXx)
The hottest day of the year at Atoka Dam, 1963 to 1999. The record is 44.4 C (111.9 F) in 1985, marked on the chart; the median year is 39.4 C (102.9 F).
Hottest day (TXx) at Atoka Dam by year
Year
Hottest day (TXx)
1963
40.6 C (105.1 F)
1964
42.8 C (109.0 F)
1965
38.9 C (102.0 F)
1966
40.0 C (104.0 F)
1967
38.9 C (102.0 F)
1968
36.7 C (98.1 F)
1969
39.4 C (102.9 F)
1970
40.6 C (105.1 F)
1971
39.4 C (102.9 F)
1972
39.4 C (102.9 F)
1973
36.1 C (97.0 F)
1974
41.1 C (106.0 F)
1975
37.8 C (100.0 F)
1976
38.9 C (102.0 F)
1977
39.4 C (102.9 F)
1978
40.0 C (104.0 F)
1979
37.8 C (100.0 F)
1980
42.8 C (109.0 F)
1981
38.9 C (102.0 F)
1982
38.3 C (100.9 F)
1983
38.9 C (102.0 F)
1984
43.3 C (109.9 F)
1985
44.4 C (111.9 F)
1986
42.8 C (109.0 F)
1987
39.4 C (102.9 F)
1988
40.0 C (104.0 F)
1989
38.9 C (102.0 F)
1990
41.1 C (106.0 F)
1991
39.4 C (102.9 F)
1992
35.6 C (96.1 F)
1993
41.1 C (106.0 F)
1994
37.8 C (100.0 F)
1995
40.6 C (105.1 F)
1996
41.7 C (107.1 F)
1997
40.6 C (105.1 F)
1998
44.4 C (111.9 F)
1999
43.3 C (109.9 F)
Coldest night (TNn)
The coldest night of the year at Atoka Dam, 1963 to 1999. The record is -20.6 C (-5.1 F) in 1977, marked on the chart; the median year is -13.3 C (8.1 F).
Coldest night (TNn) at Atoka Dam by year
Year
Coldest night (TNn)
1963
-16.7 C (1.9 F)
1964
-15.6 C (3.9 F)
1965
-10.6 C (12.9 F)
1966
-15.6 C (3.9 F)
1967
-11.1 C (12.0 F)
1968
-14.4 C (6.1 F)
1969
-13.3 C (8.1 F)
1970
-15.6 C (3.9 F)
1971
-12.8 C (9.0 F)
1972
-13.3 C (8.1 F)
1973
-16.7 C (1.9 F)
1974
-11.1 C (12.0 F)
1975
-11.7 C (10.9 F)
1976
-14.4 C (6.1 F)
1977
-20.6 C (-5.1 F)
1978
-16.7 C (1.9 F)
1979
-17.2 C (1.0 F)
1980
-12.8 C (9.0 F)
1981
-13.9 C (7.0 F)
1982
-17.2 C (1.0 F)
1983
-17.2 C (1.0 F)
1984
-17.2 C (1.0 F)
1985
-15.0 C (5.0 F)
1986
-11.7 C (10.9 F)
1987
-7.2 C (19.0 F)
1988
-12.8 C (9.0 F)
1989
-17.2 C (1.0 F)
1990
-12.2 C (10.0 F)
1991
-7.8 C (18.0 F)
1992
-11.1 C (12.0 F)
1993
-10.0 C (14.0 F)
1994
-11.1 C (12.0 F)
1995
-11.1 C (12.0 F)
1996
-15.6 C (3.9 F)
1997
-11.7 C (10.9 F)
1998
-8.9 C (16.0 F)
1999
-11.1 C (12.0 F)
Wettest day (Rx1day)
The wettest day of the year at Atoka Dam, 1963 to 1999. The record is 167.6 mm (6.6 in) in 1986, marked on the chart; the median year is 78.7 mm (3.1 in).
Wettest day (Rx1day) at Atoka Dam by year
Year
Wettest day (Rx1day)
1963
50.8 mm (2.0 in)
1964
86.4 mm (3.4 in)
1965
61.7 mm (2.4 in)
1966
111.8 mm (4.4 in)
1967
90.2 mm (3.6 in)
1968
66.0 mm (2.6 in)
1969
102.9 mm (4.1 in)
1970
102.1 mm (4.0 in)
1971
95.3 mm (3.8 in)
1972
97.3 mm (3.8 in)
1973
98.8 mm (3.9 in)
1974
100.8 mm (4.0 in)
1975
94.0 mm (3.7 in)
1976
99.1 mm (3.9 in)
1977
62.2 mm (2.4 in)
1978
51.3 mm (2.0 in)
1979
70.9 mm (2.8 in)
1980
87.6 mm (3.4 in)
1981
114.0 mm (4.5 in)
1982
76.5 mm (3.0 in)
1983
34.5 mm (1.4 in)
1984
119.1 mm (4.7 in)
1985
99.6 mm (3.9 in)
1986
167.6 mm (6.6 in)
1987
76.5 mm (3.0 in)
1988
47.8 mm (1.9 in)
1989
62.2 mm (2.4 in)
1990
73.2 mm (2.9 in)
1991
76.2 mm (3.0 in)
1992
58.4 mm (2.3 in)
1993
78.7 mm (3.1 in)
1994
63.0 mm (2.5 in)
1995
72.6 mm (2.9 in)
1996
63.5 mm (2.5 in)
1997
51.8 mm (2.0 in)
1998
111.0 mm (4.4 in)
1999
91.9 mm (3.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Atoka Dam, 1963 to 1999. The record is 212.5 mm (8.4 in) in 1986, marked on the chart; the median year is 106.0 mm (4.2 in).
Wettest five days (Rx5day) at Atoka Dam by year
Year
Wettest five days (Rx5day)
1963
138.7 mm (5.5 in)
1964
127.5 mm (5.0 in)
1965
106.0 mm (4.2 in)
1966
136.2 mm (5.4 in)
1967
191.0 mm (7.5 in)
1968
113.1 mm (4.5 in)
1969
162.3 mm (6.4 in)
1970
102.1 mm (4.0 in)
1971
130.6 mm (5.1 in)
1972
110.0 mm (4.3 in)
1973
122.2 mm (4.8 in)
1974
129.0 mm (5.1 in)
1975
104.1 mm (4.1 in)
1976
100.6 mm (4.0 in)
1977
67.8 mm (2.7 in)
1978
87.4 mm (3.4 in)
1979
91.4 mm (3.6 in)
1980
87.6 mm (3.4 in)
1981
97.8 mm (3.9 in)
1982
114.9 mm (4.5 in)
1983
38.4 mm (1.5 in)
1984
169.7 mm (6.7 in)
1985
105.4 mm (4.1 in)
1986
212.5 mm (8.4 in)
1987
160.3 mm (6.3 in)
1988
63.5 mm (2.5 in)
1989
123.2 mm (4.9 in)
1990
139.0 mm (5.5 in)
1991
100.8 mm (4.0 in)
1992
100.0 mm (3.9 in)
1993
111.2 mm (4.4 in)
1994
79.0 mm (3.1 in)
1995
77.7 mm (3.1 in)
1996
84.3 mm (3.3 in)
1997
57.4 mm (2.3 in)
1998
149.6 mm (5.9 in)
1999
91.9 mm (3.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Atoka Dam, 1963 to 1999. The record is 54 days in 1963, marked on the chart; the median year is 26 days.
Longest dry spell (CDD) at Atoka Dam by year
Year
Longest dry spell (CDD)
1963
54 days
1964
31 days
1965
26 days
1966
31 days
1967
23 days
1968
16 days
1969
34 days
1970
30 days
1971
22 days
1972
22 days
1973
19 days
1974
24 days
1975
14 days
1976
20 days
1977
28 days
1978
35 days
1979
24 days
1980
35 days
1981
21 days
1982
20 days
1983
21 days
1984
16 days
1985
16 days
1986
46 days
1987
19 days
1988
27 days
1989
29 days
1990
23 days
1991
29 days
1992
37 days
1993
31 days
1994
23 days
1995
36 days
1996
30 days
1997
17 days
1998
52 days
1999
42 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Download the Data
Data for Atoka Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Atoka Dam threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.